Simple clock/timer for Rockchip's players

sig11 · #1 (**permalink**) 16th Sep 2009, 3:32 pm

Hi guys,

Sorry for my English.

"Menu" - setup the clock or the timer ( "V+" - increase time, "V-" - decrease , "Menu" - for the next digit)
"Long Menu" - exit application
"|<<" - start the timer (bell on 00:00:00 )
">||" - Stop/Continue
">>|" - start the clock

The applications set up internal clock to 12 MHz ( I am not sure that it is supports for all models )

knob · #2 (**permalink**) 17th Sep 2009, 4:18 am

This is a good idea sig11.
I will test it out on my player.

WIZARD · #3 (**permalink**) 17th Sep 2009, 4:46 am

Thanks for this application!

I can't hear a bell - when the timer becomes zero, there's only quiet hissing

sig11 · #4 (**permalink**) 17th Sep 2009, 5:31 am

Quote:

Originally Posted by WIZARD

Thanks for this application!

I can't hear a bell - when the timer becomes zero, there's only quiet hissing

Do you have the sounds in the other games ( tanks,pirates, etc) ?

WIZARD · #5 (**permalink**) 17th Sep 2009, 6:50 am

Yes, I have sounds and music in all games created by Rockchip company,
and simple apps for testing like Data-Viewer.
So, there's no any problem with my RK2608 320x240 player.

Were the Xonix and Chess created with sounds?

knob · #6 (**permalink**) 17th Sep 2009, 10:25 am

Another member flasher86 has made sound work, here is what he writes:-

Quote:

Yes I can put music, but currently only in PCM format, which is quite annoying (files are huge). Standard platform introduces functions to play MONO 11.025KHz 8-bit Unsigned PCM stream. You can prepare this format using e.x. Sony Sound Forge (save as RAW PCM). Make sure that you ticked UNSIGNED pcm, not signed. Otherwise you get strange noises. Also 16 bit pcm is not supported yet (also strange noises), but I've already given couple of shots, and maybe I will succeed with this.

BUT, I modded the platform to be able to play PCM streams at higher sample rate. Now I can play files at 22.050KHz, 32.000KHz and even 44100KHz (though at 44100 rate it sometimes pauses playing while running some complicated operations in your RKP file. The best is 32.000KHz which is really fine quality.

In this topic I mentioned how to mod the platform to increase sample rate. Just look through few previous pages.

ps. the pcm file must be mono, but you can actually play stereo files using some trick. Platform provides 5 channels to play sounds on, at same time mixing together. Also you can set the balance of each of these channels. Then to play stereo files you may use two pcm streams of each channel (right, left) and call them on different channel at totally opposite balance set. I successfully played STEREO 44.100KHz song.

knob · #7 (**permalink**) 17th Sep 2009, 10:57 am

This works ok on my player Rockchip Rk2608 320x240 screen.
Even the alarm sounds when it counts down to zero, it sounds like an old style telephone by the way.

flasher86 · #8 (**permalink**) 30th Sep 2009, 2:46 pm

If someone wants to know how to increase frame rate of PCM Audio in RKP platform, you can use this code (if you dont want to digg through the forum).

Define write memory function somewhere in your header file:

Code:

#define write_mem(address, value)      (*((unsigned int volatile*)(address)) = (value))

To set a new frame rate put this AFTER calling the function MusicChannelAsk.
Default 11025Hz:

Code:

write_mem(0xF408, 0x0006);
write_mem(0xF408, 0x0055);

16000Hz:

Code:

write_mem(0xF408, 0x0006);
write_mem(0xF408, 0x0044);

22050Hz:

Code:

write_mem(0xF408, 0x0006);
write_mem(0xF408, 0x0033);

32000Hz:

Code:

write_mem(0xF408, 0x0006);
write_mem(0xF408, 0x0022);

44100Hz:

Code:

write_mem(0xF408, 0x0006);
write_mem(0xF408, 0x0011);

48000Hz: (not tested but should also work)

Code:

write_mem(0xF408, 0x0006);
write_mem(0xF408, 0x0080);

sig11 · #9 (**permalink**) 4th Oct 2009, 8:50 am

Quote:

Originally Posted by flasher86

If someone wants to know how to increase frame rate of PCM Audio in RKP platform, you can use this code (if you dont want to digg through the forum).

Define write memory function somewhere in your header file:

Code:

#define write_mem(address, value)      (*((unsigned int volatile*)(address)) = (value))

To set a new frame rate put this AFTER calling the function MusicChannelAsk.
Default 11025Hz:

I used the next code for the sound:

Code:

  (*MusicOn)();
  (*MusicChannelAsk)(ResourceIdexBuff[2],9983,0,1,100);

Is this correct?
Why it not works on the all players?

flasher86 · #10 (**permalink**) 4th Oct 2009, 9:05 am

It should be as follows:

Code:

#define write_mem(address, value)      (*((unsigned int volatile*)(address)) = (value))
#define IC_DATA_CMD                    ((0x1e800 + 0x10)/2) 
#define P_ADD_CCR                      (0x0006)
...

(*MusicOn)();
(*MusicChannelAsk)(ResourceIdexBuff[2],9983,1,160,100);
 write_mem(IC_DATA_CMD, P_ADD_CCR);
 write_mem(IC_DATA_CMD, 0x0011); // for 44KHz

try this one with new MusicChannelAsk parameters. third parameter can be zero but it is safer to use 1. Fourth parameter is the balance set, to hear the sound in both speakers you should set it to 160 (central value in 0-320).

btw, on which players it doesnt work?